氢

The catalytic activity for the hydrogenation of tetralin was examined with a fixed-bed continuous-flow reactor operating at 4.0MPa. The sulfur tolerance was tested with a feed of 200μg/g sulfur in the form of 4, 6-dimethyldibenzothiophene.

以四氢萘加氢为探针反应，4，6-二甲基二苯并噻吩为硫源，在固定床反应器中考察了催化剂的活性和耐硫性。

The dehydrogenation of tetralin over Ni-Mo/Al2O3, Fe2O3/Al2O3, Fe2O3 and FeS2 has been shown in this investigation to be a typical consecutive reversible reaction, with a small amount of 1, 2-dihydronaphthalene as an intermediate.

一、前言近年来煤的直接液化技术出现了不少新工艺'，这些新工艺的特点是较好地发挥了供氢溶剂和催化剂的共同作用，使反应条件得以缓和，氢耗降低，并提高了产品的收率和质量。

The changes of hydroperoxide content during the oxidation course of unsaturated hydrocarbons were investigated by using tetralin, 1-methyl-naphthalene and hex adecene as model compounds.

以四氢萘、1-甲基萘及十六烯等模型化合物为主，考察了不饱和烃类在氧化过程中氢过氧化物含量的变化，并对最终氧化产物进行了 GC/MS 分析。

The investigation of reaction kineties of tetralin hydrocraking on modified Molyblenum-Nickel catalysts with zeolite Y were conducted in the improved China-made continuous micro reactoe WF-8900 connected with gas chromatograph on-line.

在活性趋于稳定的以改性Y沸石为担体的钼镍催化剂上，利用经改造的国产WF—8900型连续流动微反-色谱装置，进行了四氢萘加氢裂化反应动力学方面的研究。

In the presence of the phase transfer catalysts such as tetramethylammonium bromide, tetraethylammonium bromide or polyethylene glycol(MW 400 and 6,000),lithium hydroxide is the best alkali among lithium hydroxide ,sodium hydroxide and potassium hydroxide.

研究表明在溴化四甲基铵、溴化四乙基铵、聚乙二醇（分子量为6，000）和聚乙二醇（分子量为400）相转移催化体系中，氢氧化锂最好，氢氧化钾次之，氢氧化钠最次。

The powder of zinc oxide was synthesized in hydrothermal conditions with Zn(NO_3)_2·6H_2O as zinc source,and tetrapropylammonium hydroxideand tetramethylammonium hydroxideas alkaline source.

以六水硝酸锌为锌源，氢氧化四丙基铵和氢氧化四甲铵分别为碱源，进行了氧化锌粉末的水热制备。

Through cyclic hydrogen bonding with motif formed by coordinated water molecules and coordinated hydroxyl groups of dhbd from adjacent tetranuclear units, these adjacent neighbors are connected to afford a 1D supramolecular chain along axis a, which is further extended via aromatic intercalations and other crystallization water molecules into a 3D structure with channels.

毗邻的四核单元通过配位H2O分子和配位羟基O原子形成的 R 22(8)型环形氢键桥的连接，沿a轴方向构建了四核单元交替相连的一维超分子链；链间籍苯环的π-π堆积作用和晶格水分子氢键链的连接进一步扩展为具有隧道的三维结构。

Several novel structures have been determined: Unique ninenuclear complexesincorporating 3d, 4f metals with a sodium ion center, the sodium ion may be serve as atemplate in the formation of these novel complexes; Novel tetranuclear 〓complexes with channels formed by intermolecular weak interactions; First 〓type tetranuclear complex; Peculiar "dimer of dimers" complexes derived frombinuclear complex; Unusual one-dimensional wave chain formed by weakcoordination bonds and hydrogen bonds and two dimensional coordination polymerconstructed through coordination bonds and hydrogen bonds.

1获得了多个文献首报和罕见的特殊结构的配合物：两个同时含有碱金属-过渡-稀土金属的独特的九核配合物；两个具有孔道的稀土-过渡金属异四核配合物；草酰胺类〓四核配合物；两个由双核配合物通过叠氮和单个氯原子连成的四核配合物，尤其是以单个氯桥相连的化合物非常少见；一个由弱配键和氢键连成的具有一维波浪形结构的配合物；一个通过配位键和氢键连成的二维配位聚合物。

The removal of organic sulfur such as thiofuran , thioether and mercaptan is the main objective of dry desulfurization , and hydroconversion of organic sulfur and preventing the methanation side reaction are the technological difficulties of hydroconversion desulfurization. The combination of two-level conversion and two.1evel absorption is the preferential scheme for refined removal of high-concentration organic sulfur.

脱除噻吩、硫醚、硫醇类有机硫是干法脱硫的主要目标，加氢转化有机硫并防止发生甲烷化副反应是加氢转化脱硫的技术难点，组合式两级转化、两级吸收是精脱高浓度有机硫的优选方案。

It is also discovered that some aliphatic sulfur in char can change to thiophenic sulfur form in mild pyrolysis condition. In addition, some thiophenic sulfur can be hydrogenated to form aliphatic sulfur in hydropyrolysis.

在热解条件下，半焦中存在脂肪硫向噻吩硫的转化；加氢热解条件下，噻吩硫可加氢转变为脂肪类有机硫。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐